package net.solvetheriddle.demo.snake.framework.impl;

import java.util.ArrayList;
import java.util.List;

import net.solvetheriddle.demo.snake.framework.Input.TouchEvent;
import net.solvetheriddle.demo.snake.framework.Pool;
import net.solvetheriddle.demo.snake.framework.Pool.PoolObjectFactory;
import android.view.MotionEvent;
import android.view.View;

public class SingleTouchHandler implements TouchHandler {
  boolean isTouched;
  int touchX;
  int touchY;
  Pool<TouchEvent> touchEventPool;
  List<TouchEvent> touchEvents = new ArrayList<TouchEvent>();
  List<TouchEvent> touchEventsBuffer = new ArrayList<TouchEvent>();
  float scaleX;
  float scaleY;

  public SingleTouchHandler(View view, float scaleX, float scaleY) {
    PoolObjectFactory<TouchEvent> factory = new PoolObjectFactory<TouchEvent>() {
      @Override
      public TouchEvent createObject() {
	return new TouchEvent();
      }
    };
    touchEventPool = new Pool<TouchEvent>(factory, 100);
    view.setOnTouchListener(this);
    this.scaleX = scaleX;
    this.scaleY = scaleY;
  }

  @Override
  public boolean onTouch(View v, MotionEvent event) {
    synchronized (this) {
      TouchEvent touchEvent = touchEventPool.newObject();
      switch (event.getAction()) {
      case MotionEvent.ACTION_DOWN:
	touchEvent.type = TouchEvent.TOUCH_DOWN;
	isTouched = true;
	break;
      case MotionEvent.ACTION_MOVE:
	touchEvent.type = TouchEvent.TOUCH_DRAGGED;
	isTouched = true;
	break;
      case MotionEvent.ACTION_CANCEL:
      case MotionEvent.ACTION_UP:
	touchEvent.type = TouchEvent.TOUCH_UP;
	isTouched = false;
	break;
      }
      touchEvent.x = touchX = (int) (event.getX() * scaleX);
      touchEvent.y = touchY = (int) (event.getY() * scaleY);
      touchEventsBuffer.add(touchEvent);
      return true;
    }
  }

  @Override
  public boolean isTouchDown(int pointer) {
    synchronized (this) {
      if (pointer == 0)
	return isTouched;
      else
	return false;
    }
  }

  @Override
  public int getTouchX(int pointer) {
    synchronized (this) {
      return touchX;
    }
  }

  @Override
  public int getTouchY(int pointer) {
    synchronized (this) {
      return touchY;
    }
  }

  @Override
  public List<TouchEvent> getTouchEvents() {
    synchronized (this) {
      int len = touchEvents.size();
      for (int i = 0; i < len; i++)
	touchEventPool.free(touchEvents.get(i));
      touchEvents.clear();
      touchEvents.addAll(touchEventsBuffer);
      touchEventsBuffer.clear();
      return touchEvents;
    }
  }

}
